Rag-engine.



No. 652,561. Patented June 26, I900. E. A. JONES.

RAG ENGINE.

(Application filed Aug. 17, 1899..

2 Sheets-Sheet I..

(No Modal.)

In: News PETERS 00., Pmmnmwq WASHINGTON. DV :2.

No. 652,56I. I Patented June 26, I900. E. A. JONES.

RAG ENGINE.

(Application filed Aug. 17, 1899.;

(NoIodeL) 2 Sheets-Sheet 2.

W/ T/VE SSE 8 Madam.

A 77'0HNEYS.

n4: Moms ErERs co. PHOYO-UTHD. wAsniNsYoN, 11cv pti EDWARD ARCHIE JONES,OF PITTSFIELD, MASSACHUSETTS, ASSIGNOR TO THE E. D. JONES & soNsCOMPANY, OF SAME PLACE.

RAG-ENGINE.

SPECIFICATION forming part of Letters Patent No. 652,561, dated June 26,1900.

Application filed August 17, 1899.

To (tZZ whom, it may concern.-

Be it known that I, EDWARD ARCHIE JONES, of Pittsfield, in the county ofBerkshire and State of Massachusetts, have in- 5 vented a new andImproved Rag-Engine, of

which the following is a full, clear, and exact description.

The invention relates to paper-makingmachines; and its object is toprovide a new and improved rag or beating engine which is simple anddurable in construction, very effective in operation, and arranged to relieve the beating-dru ms of unnecessary pressure of the entering pulp,thus saving power in driving the engine and insuring a thorough mixingand agitating of the pulp and a rapid circulation to avoid streakstherein, and to facilitate emptying of the engine of the finished stock.

The invention consists of novel features and parts and combinations ofthe same, as will be fully described hereinafter and then pointed out inthe claims.

A practical embodiment of the invention is represented in theaccompanying drawings, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a plan view of the improvement with parts broken out. Fig, 2is a sectional side elevation of the same on the line 2 2 in Fig. 1.Fig. 3 is an enlarged sectional plan view of the backfall-plate.

The improved rag-engine is provided with a vat A, containing the usualmidfeather B, on one side of which is mounted to rotate a beating-drumO, secured on a shaft D, journaled in suitable bearings and providedwith a pulley E, connected by a belt with other machinery for impartinga rotary motion to the said pulley, the shaft 1), and the drum in thedirection of the arrow a. (Indicated in Fig. 2.)

The knives or cutters of the drum 0 operate in conjunction with theusual bottom 5 blades F, and in the front of said drum 0, at

the feed side thereof, is arranged a shield G, preferably made segmentaland fitted to slide up and down in suitable guideways G G of which theguideway G is secured to the inner 5o face of one side of the vat andthe other guideway G is attached to the midfeather B.

Serial No. 727,534. (No model.)

On the inside of the shield G, near the ends thereof, are securedsegmental racks G in mesh with gear-wheels G secured on atransversely-extending shaft G journaled in suitable hearings in theside of the vat and the midfeather, a hand-wheel G6 being on one outerend of the shaft to permit the operator to turn the shaft to raise andlower the shield by the gear-wheels meshing in the racks G A suitablelocking device G is adapted to engage the hand-wheel G to lock thelatter, the shaft, and the shield in place after the desired adjustmentis made.

By reference to Figs. 1 and 2 it will be seen 6 that the shield Gextends downward from the top of the vat to a suitable place within thebottom thereof, so that the front or feed side of the drum 0 is shieldedfrom the stock in the vat, and consequently the said. drum is relievedof pressure from the stock at this side, so that the engine can be runat a high rate of speed with comparatively little power. The shield G israised or lowered to leave sufiicient opening near the bottom of the vatfor the proper amount of pulp to enter to the knives and cutters of thedrum at the blades F.

On the discharge side of the drum 0 is arrange a \l-shaped baokfall H,provided on its front face with a plate H, formed with or supportingsets of ribs H H inclined obliquely one to the other, as is plainlyshown in Fig. 1, a space being left between the sets of ribs at themiddle of the plate H.

As shown in Fig. l, the sets of ribs are inclined toward each other fromthe bottom upward, so that the pulp passing up on this face of thebackfall, near the sides thereof, passes between adjacent ribs of thesets and is thus caused to travel in an oblique direction, so that thepulp is thrown toward the middle of the backfall, and consequently thepulp is thoroughly mixed. If desired, the ribs may be arranged to throwthe pulp from 5 the middle to the sides to accomplish the same purpose.

In order to prevent some of the pulp from being carried over by the drum0, a cover I is provided attached to one side of the vat I00 and to thetop of the mid-feather E the rear end of the cover being formed with anarched extension I, located over the backfall H, with a V-shaped plateat the junction of the extension 1 with the cover and with the saidplate close to the knives or cutters of the drum to form a doctor forthe same to prevent any of the pulp from being carried over by the drum.Furthermore, the arched extension 1 serves as a deflector, so that thepulp flows upward over the backfall in the manner described and isdeflected downward upon the back of the said backfall, to then flow uponthe downwardly and outwardly inclined bed J, which forms acontinuationof the backfall and which bed extends to the upper end of the inclinedbottom K of the vat, theinclination extending downward from the end ofthe bed J to the discharge-valve L in the lower end of the vat.

It is evident from the foregoing that after the pulp is discharged downthe backfall it flows byits own gravity from the bed Jdown the inclinedbottom K, back to the shield G, and through the feed-opening thereof tothe drum 0. The How of the pulp is thus greatly facilitated, and as thedrum is considerably relieved of the pressure of the pulp at the frontor feed side thereof it is evident that the machine can be run withcomparatively little power to accomplish the desired result.

Having thus fully described my invention,

backfall whose face adjacent the drum is formed with two sets ofspaced-apart ribs, one set being spaced from the other and the ribs ofone set extending obliquely toward the ribs of the other set, as setforth.

2. A rag-engine, provided with a backfall having obliquely-disposed ribsfor mixing the pulp after leaving the drum, substantially as shown anddescribed.

3. A rag-engine, provided with a backfall having its face adjacent tothe beating-drum provided with spaced-apart sets of ribsstanding'obliquely to one another, to mix the pulp afterleaving the drum,substantially as shown and described.

4. A rag-engine, provided with a backfall havingits face adjacent to thedrum provided with spaced sets of ribs for throwing the pulp passing upthe backfall from the sides to the center at the rear face of the backfall, to mix the pulp, substantially as shown and described.

EDWARD AROHIE JONES.

Witnesses:

WALLACE E. BARDWELL, WILLIAM R. THOMAS.

